The ChemCollective   NSDL and CMU

About

About Us

View Contributors

News

Papers and Publications

Instructors

Intro for Instructors

Find Activities

Online Stoichiometry Course

Comment About Your Experience

Share Classroom Data

Modify or Create Activities

Students

Intro for Students

Find Your Instructor's Website

Chemistry Tutorials

Run Virtual Lab

Explore a Murder Mystery

Try Other Activities

Help

Getting Started and FAQ

Documentation

Links

Related Projects



The ChemCollective >> Find Activities >> Thermodynamics Concept Tests

Thermodynamics Concept Tests

Problem 1

A piston is connected to a drive train that causes a car to move. The flame below is turned on, which heats up the gas causing it to expand.
Engine diagram
The signs of q and w for the gas in the cylinder are:

A.     q +     w +
B.     q +     w -
C.     q -      w +
D.     q -      w -

Problem 2

Consider burning acetylene:

C2H2(g) + 3/2O2(g) <---> CO2 (g) + H2O(l)         DH = -1301.1 kJ

What is DH for the reaction:

2CO2(g) + 2H2O(l) <---> 2C2H2(g) + 3O2(g)

A.  DH = -2602.2 kJ
B.  DH = -1301.1 kJ
C.  DH = 1301.1 kJ
D.  DH = 2602.2 kJ

   Page Last Updated: 01.29.2010